菌渣有机肥替代部分化肥对土壤肥力及玉米产量的影响

Effects of Bacterial Residue Organic Fertilize Replacing Part of Chemical Fertilizer on Soil Fertility and Maize Yield

用等养分含量的菌渣有机肥代替复合肥对玉米进行施用,研究土壤养分和玉米产量变化,明确最佳替代率。结果表明,增施有机肥能防止土壤酸化、提高土壤有机质含量、缓解磷的富集,从而改善土壤性状,有效促进作物生长发育和增产,菌渣有机肥替代复合肥的比例在45%~60%时获得最高产量为9124.95 kg/hm^(2),为菌渣有机肥的适宜替代比例。

Using the same nutrient content of bacterial residue organic fertilizer instead of compound fertilizer to apply to corn,the changes of soil nutrients and maize yield were studied in order to clarify the best replacement rate.The test results showed that increasing the application of organic fertilizer could prevent soil acidification,increase soil organic matter content,and alleviate phosphorus accumulation,thereby improving soil properties,effectively promoting crop growth and production.The highest yield was 9124.95 kg/hm^(2) when the ratio of bacterial residue organic fertilizer instead of compound fertilizer was 45%-60%,which was suitable replacement ratio for bacterial residue organic fertilizer.